Fabrication and studies on Si/InP core-shell nanowire based solar cell using etched Si nanowire arrays

Pal, Biswajit; Sarkar, Kalyan Jyoti; Banerji, P.

doi:10.1016/j.solmat.2019.110217

Cited by 20 publications

(9 citation statements)

References 48 publications

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“…The PV parameters, including the efficiency of different core–shell Si-NW-based solar cells reported in the literature, are given in Table for comparison. It is noted that most of the cells in core–shell configurations are prepared using high-temperature processing, including rapid thermal annealing at around (600–1000) °C, although the cell efficiencies are limited to <5%. − Jia et al prepared the shell layers using PECVD at T S ∼225 °C and obtained a cell efficiency of ∼7.29% . In the present work, the PV conversion efficiency of η ∼ 7.5% is attained in Si-NW-based core–shell solar cells, in which the PECVD-grown shell layers are prepared even at a lower temperature, T S ∼180 °C, while the Si-NW core is prepared by Ag-assisted chemical etching at ambient temperature (∼25 °C).…”

Section: Results and Discussionmentioning

confidence: 63%

Investigating the Ag-assisted Chemical Etching Kinetics in Growing Si-NWs and Fabricating the p-i-n core–shell Heterojunction Si-NW Array Solar Cells

Sarkar,

Das

2023

Energy Fuels

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Involving a single-step, low-cost, Ag-assisted chemical etching process at ambient temperature, vertically aligned uniform silicon nanowire (Si-NW) arrays are produced with various lengths following an identical etching rate. The formation mechanism of Si-NW arrays by the selective etching of bulk c-Si via a continuous reduction–oxidation-dissolution process is proposed, involving the conjoint roles of Ag-NPs and Ag-dendrite structures. Each Ag0 deposit on the Si surface acts like a nanoelectrochemical cell, wherein both the cathode and anode reactions proceed simultaneously. Significantly low reflectance of <1% over a wide spectral range via the inherent light-trapping capabilities makes the Si-NW arrays a unique semiconductor for fabricating solar cells with embedded self-generated antireflection. The multilayer p-type amorphous-Si/intrinsic amorphous-Si/n-type crystalline-Si NW (p-a-Si/i-a-Si/n-c-Si-NW) heterojunction solar cell fabricated in core–shell configuration, with a ∼1.9 μm long NW-arrays core generated via chemical etching of the n-type (100) Si wafer and the shell-layers grown by plasma CVD, delivers the highest PV conversion efficiency of η ∼ 5.64%. A substantial charge recombination loss due to a significant lattice mismatch at the i-a-Si/n-c-Si-NW heterojunction has been minimized further by introducing an intrinsic nanocrystalline-Si (i-nc-Si) layer at the interface. The Si-NW solar cell comprising its p-a-Si/(i-a-Si/i-nc-Si)/n-c-Si-NW modified core–shell structure demonstrates an increased J SC ∼ 29 mA cm–2, improved FF ∼ 50%, and elevated PV conversion efficiency of η ∼ 7.54%, which is significant of its type, following the spirit of the present pursuit of a simple low-temperature solar cell fabrication route.

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Section: Results and Discussionmentioning

confidence: 63%

Investigating the Ag-assisted Chemical Etching Kinetics in Growing Si-NWs and Fabricating the p-i-n core–shell Heterojunction Si-NW Array Solar Cells

Sarkar,

Das

2023

Energy Fuels

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“…Atomic-level chemical welding of silver nanowire electrodes [ 19 ] can be used to construct a flexible organic solar cell with high efficiency. Si/InP core-shell nanowire-based solar cell using etched Si nanowire [ 20 ] confirm the formation of radial nanowire heterostructures. In this cell, more photons can be absorbed.…”

Section: Morphology and Properties Of Iva-ldmentioning

confidence: 99%

Low-Dimensional Nanomaterial Systems Formed by IVA Group Elements Allow Energy Conversion Materials to Flourish

Shi

et al. 2022

Nanomaterials

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In response to the exhaustion of traditional energy, green and efficient energy conversion has attracted growing attention. The IVA group elements, especially carbon, are widely distributed and stable in the earth’s crust, and have received a lot of attention from scientists. The low-dimensional structures composed of IVA group elements have special energy band structure and electrical properties, which allow them to show more excellent performance in the fields of energy conversion. In recent years, the diversification of synthesis and optimization of properties of IVA group elements low-dimensional nanomaterials (IVA-LD) contributed to the flourishing development of related fields. This paper reviews the properties and synthesis methods of IVA-LD for energy conversion devices, as well as their current applications in major fields such as ion battery, moisture electricity generation, and solar-driven evaporation. Finally, the prospects and challenges faced by the IVA-LD in the field of energy conversion are discussed.

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“…In fact, as demonstrated in [ 56 , 57 , 58 , 59 , 60 , 61 , 62 ], due to the high surface area, the electrodes based on the arrays of nanowires showed very good performance compared to the planar ones. This is generally true for all electrochemical devices with nanostructured electrodes [ 4 , 63 ] such as batteries [ 64 , 65 , 66 ], sensors [ 67 , 68 , 69 , 70 ], supercapacitors [ 71 , 72 , 73 ] and solar cells [ 74 , 75 , 76 ].…”

Section: Introductionmentioning

confidence: 99%

Pd–Co-Based Electrodes for Hydrogen Production by Water Splitting in Acidic Media

et al. 2023

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To realize the benefits of a hydrogen economy, hydrogen must be produced cleanly, efficiently and affordably from renewable resources and, preferentially, close to the end-users. The goal is a sustainable cycle of hydrogen production and use: in the first stage of the cycle, hydrogen is produced from renewable resources and then used to feed a fuel cell. This cycle produces no pollution and no greenhouse gases. In this context, the development of electrolyzers producing high-purity hydrogen with a high efficiency and low cost is of great importance. Electrode materials play a fundamental role in influencing electrolyzer performances; consequently, in recent years considerable efforts have been made to obtain highly efficient and inexpensive catalyst materials. To reach both goals, we have developed electrodes based on Pd–Co alloys to be potentially used in the PEMEL electrolyzer. In fact, the Pd–Co alloy is a valid alternative to Pt for hydrogen evolution. The alloys were electrodeposited using two different types of support: carbon paper, to fabricate a porous structure, and anodic alumina membrane, to obtain regular arrays of nanowires. The goal was to obtain electrodes with very large active surface areas and a small amount of material. The research demonstrates that the electrochemical method is an ideal technique to obtain materials with good performances for the hydrogen evolution reaction. The Pd–Co alloy composition can be controlled by adjusting electrodeposition parameters (bath composition, current density and deposition time). The main results concerning the fabrication process and the characterization are presented and the performance in acid conditions is discussed.

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Fabrication and studies on Si/InP core-shell nanowire based solar cell using etched Si nanowire arrays

Cited by 20 publications

References 48 publications

Investigating the Ag-assisted Chemical Etching Kinetics in Growing Si-NWs and Fabricating the p-i-n core–shell Heterojunction Si-NW Array Solar Cells

Investigating the Ag-assisted Chemical Etching Kinetics in Growing Si-NWs and Fabricating the p-i-n core–shell Heterojunction Si-NW Array Solar Cells

Low-Dimensional Nanomaterial Systems Formed by IVA Group Elements Allow Energy Conversion Materials to Flourish

Pd–Co-Based Electrodes for Hydrogen Production by Water Splitting in Acidic Media

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